25564366105140 has 48 divisors (see below), whose sum is σ = 73244881499328. Its totient is φ = 6658625589504.

The previous prime is 25564366105067. The next prime is 25564366105217. The reversal of 25564366105140 is 4150166346552.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25564366105140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4954331937 + ... + 4954337096.

It is an arithmetic number, because the mean of its divisors is an integer number (1525935031236).

Almost surely, 2^{25564366105140} is an apocalyptic number.

25564366105140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25564366105140 is an abundant number, since it is smaller than the sum of its proper divisors (47680515394188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25564366105140 is a wasteful number, since it uses less digits than its factorization.

25564366105140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9908669088 (or 9908669086 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 25564366105140 in words is "twenty-five trillion, five hundred sixty-four billion, three hundred sixty-six million, one hundred five thousand, one hundred forty".